Description
TI SN74F163AD IC COUNTER 4BIT BIN SYNC 16-SOIC
This synchronous, presettable, 4-bit binary counter has internal carry look-ahead circuitry for use in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable (ENP, ENT) inputs and internal gating. This mode of operation eliminates the output counting spikes that normally are associated with asynchronous (ripple-clock) counters. However, counting spikes can occur on the ripple-carry (RCO) output. A buffered clock (CLK) input triggers the four flip-flops on the rising (positive-going) edge of CLK.
This counter is fully programmable. That is, it can be preset to any number between 0 and 15. Because presetting is synchronous, a low logic level at the load (LOAD ) input disables the counter and causes the outputs to agree with the setup data after the next clock pulse, regardless of the levels of ENP and ENT.
The clear function is synchronous, and a low logic level at the clear (CLR ) input sets all four of the flip-flop outputs to low after the next low-to-high transition of the clock, regardless of the levels of ENP and ENT. This synchronous clear allows the count length to be modified easily by decoding the Q outputs for the maximum count desired. The active-low output of the gate used for decoding is connected to the clear input to synchronously clear the counter to 0000 (LLLL).
The SN74F163A features a fully independent clock circuit. Changes at ENP, ENT, or LOAD that modify the operating mode have no effect on the contents of the counter until clocking occurs. The function of the counter (whether enabled, disabled, loading, or counting) is dictated solely by the conditions meeting the setup and hold times.
Specifications
Product Category: Counter ICs
Manufacturer: Texas Instruments
RoHS: RoHS Compliant
Counter Type: Binary
Logic Family: F
Number of Bits: 4 bit
Counting Sequence: Up
Operating Supply Voltage: 4.5 V to 5.5 V
Operating Temperature Range: 0 C to + 70 C
Mounting Style: SMD/SMT
Package / Case: SOIC-16
Packaging: Tube
Brand: Texas Instruments
Function: Counter
Maximum Operating Temperature: + 70 C
Minimum Operating Temperature: 0 C
Output Current: 20 ma/- 1 mA
Series: SN74F163A
Factory Pack Quantity: 40
Unit Weight: 0.004998 oz
Manufacturer Part Number: SN74F163AD
Manufacturer: Texas Instruments
